A 4 kg ball and an 8 kg ball are simultaneously launched with a speed of 10 m/s and at an angle of 40° to the horizon. If air resistance is negligible, which of the following best describes the flight time and horizontal range of the two balls? A) Both balls have the same flight time and range
B) The 8kg has a longer flight time and longer range
C) The 4kg ball has a longer flight time but both balls have the same range
D) The 4kg ball has a longer flight time and longer range